A Fast Decomposition Method for Dynamic Energy Flow Calculation of Electric-Heat Integrated Energy System

An integrated energy system and energy flow calculation technology, which is applied in the field of rapid decomposition of dynamic energy flow calculation of electric-thermal integrated energy systems, can solve the problems of increased calculation amount, hindered grid network analysis, and less research on dynamic models, etc. The effect of ensuring accuracy and reducing system scale

Active Publication Date: 2022-05-31
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0005] 1) As the scale of the system increases, the amount of calculation increases greatly, which is not suitable for simultaneous analysis;
[0006] 2) The analysis of the grid network is still blocked, and the two-way hydraulic state in IEHS is complicated;
[0007] 3) The improvement of EFC is mainly based on the static model, while the research on the dynamic model is less

Method used

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Experimental program
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Embodiment

[0114] Step 101) Power System

[0116]

[0117]

[0127] BΔp=0, Δp=Km|m| (4)

[0130] The dynamic process of heat transfer along a pipe is usually formulated as a partial difference equation that ignores static heat conduction in the fluid,

[0131]

[0133]

[0136]

[0138]

[0139]

[0142]

[0144] Furthermore, the nodes in the DHS are modeled as heat exchangers, which can be represented as:

[0146] Finally, the mixed node temperature is equal to the temperature at the beginning of some pipelines, expressed as:

[0147]

[0151] φ

[0152] Assume that the IEHS operates in thermal load follower mode, in which case the DHS is the equivalent load of the EPS, as shown in Figure 3

[0155]

[0156]

[0158] The EFC of the IEHS consists of three parts: the EFC of the DHS, the coupling unit and the EPS, which are in thermal load following mode

[0161] Due to the large scale and complexity of the system, the increment of variables poses a challenge to the EFC efficiency of DHS. In th...

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Abstract

The present invention belongs to the technical field of energy evolution research, and provides a fast decomposition method for calculating the dynamic energy flow of an electric-thermal integrated energy system; the technical solution adopted includes the following steps: step 10) establishes the IEHS dynamic model, and step 20) proposes The fast decomposition method of dynamic energy flow calculation, step 30) performs numerical simulation, and verifies the performance of the method proposed in step 20); the present invention uses the finite difference method of the Euler difference scheme to establish the dynamic model of IEHS, on this basis , a fast decomposition method is proposed to reduce the scale of the studied system, and the correction mode of the EFC results in the decomposed system is established to ensure the accuracy.

Description

A fast decomposition method for dynamic energy flow calculation of electric-thermal integrated energy system technical field The fast decomposition method of electric-thermal integrated energy system dynamic energy flow calculation of the present invention belongs to the technology of energy evolution research. In the field of technology, it specifically relates to a fast decomposition method for dynamic energy flow calculation of electric-thermal integrated energy systems. Background technique [0002] The increasingly serious energy crisis and environmental problems have put forward new requirements for building an efficient and clean energy structure. do As a typical form of energy evolution, the Electric-Heat Integrated Energy System (IEHS) uses energy cascade utilization and complementary optimization to Combined Electric Power System (EPS) and District Heating System (DHS) facilitates renewable energy absorption and operational flexibility sex. Due to its advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F111/10G06F119/02
CPCG06F30/23G06F2111/10G06F2119/02Y04S10/50
Inventor 骆钊耿家璐贾芸睿董敏刘可真沈赋王菁慧代莹皓
Owner KUNMING UNIV OF SCI & TECH
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